martha teichner looks up to birdhouses, finds an old neighborhood in china enjoying new life, and erin moriarty takes us on a tour of imaginative roof gardens and schlessinger shows us state of the art offices and more, but first let's go to don dahler in the newsroom for the sunday morning headlines. >> good morning, it is august 25th, 2013. in california, a massive wildfire continues to spread along the northwest edge of yosemite national park, the 203 square mile blaze is so large it is threatening the power and water supply to san francisco 200 miles to the west. in washington yesterday, president obama met with top advisors to consider a military response to the alleged use of chemical weapons in syria. reports say at least 322 peopler including 54 children were killed in wednesday's attack. the assad government denies responsibility saying rebel forces also yesterday tens of thousands of people packed the national mall in our nation's capital to commemorate the 50th anniversary wednesday of martin luther king's i have aÑi dream speech, the speakers said that dream includes equal